Natural Health News – The alleged “safety” of the herbicide glyphosate GMO, the herbicide most widely used worldwide, has been dealt another blow this time with evidence linking threatening resistance to antibiotics.
Recently, the International Agency for Research on Cancer (IARC), a branch of the World Health Organization said the herbicide “ a probable human carcinogen .”
Now, an international team of researchers in New Zealand and Mexico, writing in American Society for Microbiology ‘s Daily mBio concluded that glyphosate (the active ingredient in Roundup product, which is widely used in GM crops) and two other widely used herbicide, 2,4-D and dicamba, change the way bacteria responded to a number of antibiotics, including ampicillin, ciprofloxacin and tetracycline are widely used to treat a variety of serious illnesses, and sometimes fatal ,.
These proven herbicides are currently used on a scale that can almost use the term ubiquitous. On the one hand, glyphosate is used in about 94% of soybeans and 89% of the corn grown in the US, while 2,4-D is third most widely used herbicide in the US, while dicamba ranks fifth in use worldwide .
bacteria that make stronger
According to Jack Heinemann, a professor of genetics at the University of Canterbury in New Zealand, and lead author of the new study, when pesticides are tested for adverse effects, “the lethal toxicity is that people focus on.” In other words, the amount of the chemical kill an organism.
Heinemann and colleagues’ study is different because it looks at sublethal effects -. In other words, what happens when the bacteria are not killed instantly, but remain alive
The herbicides used in the study were purchased from a local store and used at the levels specified in the instructions for use, which means that scientists were testing chemicals currently in use around the world instead of a sample of special laboratory the active compound.
When two strains of bacteria are exposed – E. coli and Salmonella – found to herbicides that activate efflux pumps known as protein that bacteria use to get rid of toxins. This defense mechanism helps bacteria develop resistance to a toxic substance.
A ubiquitous poison
Glyphosate is everywhere and not just in food crops. It is sprayed on the roads, in parks and on sidewalks. It is also sprayed on crops genetically modified cereals as not a desiccant (drying) before harvesting. Perhaps not surprisingly, recent surveys of bread in the UK have found that 60% of the bread containing waste, glyphosate is the most frequently detected pesticide .)
But surely some, is the introduction of glyphosate tolerant crops (Roundup Ready) genetically modified controller that up worldwide circulation.
Most GM crops are bred to be resistant to glyphosate and there is no evidence that it is not only glyphosate further sprayed on genetically modified crops (due to surrounding weeds have rapidly developed resistance it), but these plants absorb many times more glyphosate, AMPA and toxic breakdown product, that normal crops . This residue is transmitted in the food chain.
Although this study suggests that farming communities are at particular risk, the research also suggests that there may be a small chance that exposure via food could produce these effects.
Growing evidence of toxicity
To address this growing problem of resistance of weeds, last year the US It approved two new types of GMO crops – resistant to 2,4-D and dicamba. This is expected to significantly increase the amount of these toxic substances in agricultural use.
Antibiotic resistance is a serious and growing to human and animal health problem. New antibiotics are hard to find and can take decades to be available. Untested chemicals such as herbicides effects, especially with GM crops increase their use could make the fight against the spread of resistance to antibiotics that much more difficult.
Last year another study from Brazil found that glyphosate also promotes resistance Pseudomonas aeruginosa a bacterium that causes the infection, particularly in patients with immune systems committed.